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2002 paper 1 - HSN forum

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2002 paper 1


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#1 x_Claire_x

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Posted 15 May 2006 - 07:16 PM

i know its hard cos i don't have the graph to show you but could anyone explain what to do unsure.gif
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#2 Joel

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Posted 15 May 2006 - 08:21 PM

Okay, it's difficult to explain how to do this. Look at the graph of f(x), the PI's and turning points will become roots on the derived function graph (keeping the same x-coordinate). When the graph of f(x) is increasing, the derived graph will be above the x axis. When f(x) is decreasing, the derived graph will be below the x axis.

Here's the answer to the question, hopefully this will help to illustrate my point.

IPB Image 2002 Paper 1 - Question 6

#3 Mr H

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Posted 18 May 2006 - 09:37 PM

Here's a website which might help with graphing the derivative problems:

http://people.hofstra.edu/faculty/Stefan_W...rivgraphex.html

H tends 2 infinity

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